Switching apparatus



W. M. SCOTT.

SWITCHING AP?ARATUS. APPLICATION FILED DEC-24, 1919. Patented Sept. 6, 1921.

2 SHEETSSHEET 66 lwzu'jf i BY M2-GM i2 ATTORNEY W. M. SCOTT. SWITCHING APPARATUS.

, APPLICATION FILED DEC.24, 1919. 1,389,996.

Patented'Sept. 6,1921.

2 SHEETS-SHEET 2- IN V EN TOR.

A TTORNEY UNITED STATES PATENT OFFICE.

SWITCHING APPARATUS.

Specification of Letters Patent.

Patented Sept. 6, 1921.

Application filed December 24, 1919. Serial No. 347,182.

To all whom it may concern:

' Be it known that I, \VILLIAM M. Scorr,

a citizen of the United States, residing in Tredyffrin township, in the county of Chester and State of Pennsylvania, have invented anew and useful Switching Apparatus, of which the following is a specification.

My invention relates to electrical switch or circuit breaker structure for controlling or protecting electric circuits carrying current for power, lighting or other purposes.

My invention relates to electric switch or circuit breaker structure of the character disclosed in my prior application SenNo.

328,056, filed October 2, 1919, and this application is in part a continuation thereof.

My invention resides in circuit breaker mechanism comprising independently or alternately operable switch arms restrained in normal position by looking or equivalent means, and automatically tripped, as by electro-magnetic means, in combination with means for actuating or resetting the switch arms one at atime by movements sharply. differentiated from each other or in opposite directions.

. My invention resides further in the combination with such switching or circuit breaker mechanism and its actuating or resetting means, of a housing inclosing the switch or circuit breaker mechanism, and

the resetting or actuating means with provisions for operating the actuating or resetting means .from the exterior of the housing; and more particularly my invention resides in such a' combination wherein the actuating or resetting means is mounted upon and movable with a door or movable wall of the housing.

My invention resides in operating mechanism for electric switch or circuit breaker mechanism, particularly when housed with in a box, and comprising means for alternately resetting or closing the switches or circuit breakers, the switch or breaker resetting or closing member partaking of characteristically different movements for effecting, respectively, closure or resetting of the. switch or breaker mechanisms and for tripping them.

My invention resides in further features of structure and combination hereinafter described.

For an illustration of one of the various forms my invention may take, reference is to be had to the accompanying drawings, in which:

Figure 1 is a side elevational view of mechanism embodying my invention, walls of the housing structure being broken away.

Fig. 2 is a front elevational view of the structure shown in Fig. 1, with part of the housing broken away.

Fig. 3 is a side elevational view of the resetting and tripping shaft.

Figs. 3 and 3 are opposite end views of the structure of Fig. 3.

Fig. 4 is a side elevational view of the operating handle.

Fig. 5 is an end elevational view of the same. j

Fig. 6 is a side elevational View of part of the resetting and tripping structure.

Fig. 7 is a'frontelevational view of the same. 7

Fig. 8 is a plan view of a detail of construction. Fig. 9 is a diagrammatic view of a preferred form of circuit arrangement.

Referring to the drawings, 1 is a base of insulating material, as slate or the like, secured in vertical position by screws 2 to a metal box or housing 3 adapted to be secured to a wall or pillar of a building, or any other suitable support. Secured upon the front of the base 1 is the switch or circuit breaker mechanism hereinafter described, housed in the box or other suitable housing 4 secured to the base 1 by any suitable means. In the example illustrated, the box 4 at its lower end adjacent the base 1 rests upon hooks or members 5 and is held in operative position illustrated upon base 1 by the screw 6 threaded into the Sleeve 7 secured upon the post 8 mounted upon the base 1. Carried by'the front wall of the box 4 is the member 9 between whose lugs 10 is positioned the screw 6 which, when a padlock member 11, indicated in dotted lines in Fig. 8, extends through the apertures 12 in the lugs 10, is inaccessible to a screw driver, the padlock therefore preventing removal of the screw 6 which holds the box 4 to the base 1.

Theswitching mechanism comprises two switches or circuit breakers A and B, disposed side by side upon the base 1. They are or may be of the same structure, and a description of one will suffice for both.

The circuitbreaker A comprises the stationary ,main terminals 13 and 14 secured upon the front face of the base 1. WVith the upper terminal block 13 connects a Stud 15 upon which is secured a cable or conductor terminal 16 in communication with a conductor 17 covered with insulation 18, and extending into the, pipe or conduit 19 threaded at its end and extending through the side wall of the box 3 and held in position by the nuts 20. With the lower terminal block 14 connects one terminal of the electro-magnet winding 21, whose other terminal connects with the stud 22 upon which is secured the terminal 23 with which con nects the conductor 24, having insulation 18, and extending through the aforesaid conduit 1'9.

Similarly, in the breaker B the upper and lower main terminals are indicated at 13.

and 14 the magnet winding 21, and the conductors 17 and 24 extending into the box 3 through a second conduit 19 extending through the opposite side wall of the box 3.

\Vith the main terminals of the breaker A coiiperates' the movable laminated bridging contact 25, and in the breaker B the corresponding'part is indicated at 25*. v

The movable contact member 25 is carried bythe arm 26 pivoted to the stationary bracket or housing 27 at 28. Pivoted to the arm 26 at 29 is the toggle link 30 pivoted at 31 to the second tog le link or lever 32 pivoted to the bracket 2 at 33, and having the downwardly extending member 34 having the arched engaging surface 35 and carrying at its lower end the disk 36 of fiber or other insulating material. Secured to the toggle lever 32' adjacent pivot 33 is the outstanding tripping arm or abutment 37.

Vith the parts in the circuit closing position shown in Fig. 1 the toggle 30, 32 is slightly overtraveled in the sense that the center of the pivot 31 is slightly to the right and above the imaginary line joining the centers of the pivots 29 and 33, collapse of the toggle being prevented by engagement of the link arm 34 against a fixed abutment 34 which limits its clockwise movement about pivot 33 as viewed in Fig. 1. lVhile the toggle 30, 32 remains in overtraveled position the contact member 25 will remain in bridging engagement with the main terminals 13 and 14.

The aforesaid magnet winding 21 is disposed upon the horizontal core 40 whose pole pieces are 41, 42, with which cooperates the armature 43 pivoted at 44 and resting when unattracted on the stirrup or bracket 45 which has the upward extension 46 between which and the pole of the electro-magnet is disposed the upwardly movable pin 47 hooked at 48 to prevent it dropping downwardly, and hooked at 49 to limlt its upward movement.

By sliding the member 50 outwardly or inwardly on the horizontal portion of the bracket member 45,. the position of the armature 43 with respect to the magnet poles 41, 42, may be varied, to calibrate or adjust the tripping mechanism to respond to different de rees of overload.

xtending through the bushing structure 51 and a hole through the front wall of the box 4 is the round shaft 52 having the fiattened'or squared outward extension 53 be yond which is the further round extension 54 on which is secured the button 55. At its opposite end the shaft has a squared or flattened extension 56. The operating handle 57 has a rectangular aperture 58 through which is longitudinally slidable the section 53 of the shaft structure; and between the handle 53 and the button or head is disposed the spring 59.

Carried by the front wall of the box 4 is the lug 60 through whose aperture 61 may extent a padlock member (not shown) embracing the handle 57 and thereby preventing operation of the latter.

Iiside the box is the oscillating bracket meriiber 62 having the downward extension 63 having the circular hole 64 through which the shaft 52 extends, and the rearwardly extending horizontal portion 65 terminating in the upwardly extending lug 66, having the rectangular aperture 67 receiving the extension 56 upon the shaft 52. Through the extension 56 extends a pin 68 holding the lug 66 against the shoulder on the end of the shaft 52, the extension 63 being positioned adjacent the aforesaid inner bushing member 51 in which the shaft 52 is rotatable.

Secured at 69 on the inside of the front wall of the box 4 is the upper end of a tension spring 70 whose lower end connects to the pin 71 secured at the center of the bracket member 62, whereby the spring biases the member 62 to its mid position indicated.

Secured upon the rear face of the, bracket member 62 is the plate 72, of fiber or other suitable, preferably insulating, material, whose edges 73 are adapted to engage upon the upper sides of the arcuate engaging faces 35 of the toggle levers 34 and whose face is adapted to engage the tripping arms or abutments 37.

Extending toward the front are the lugs 74 upon the bracket member 62. \Vith them coiiperate lugs 75 supported upon and extending inwardly from the front wall of the box 4.

1n the front wall of the box 4 are holes 76, Fig. 2, back of each of which is supported a transparent member 77 of glass or other suitable material. whereby the disks 36 upon the lower ends of the toggle arms 34 are visible through the apertures 76. These disks may be painted red or otherwise marked so that when they are in position to be visible through the aperture 76 it indicates that the switch or breaker mechanisms are in circuit closing position. When they are not visible it is an indication that the switches or circuit breakers are in open circuit position.

Referring toFig. 9, there is shown a diagram of a circuit arrangement in which the switches orcircuit breakers are preferably employed. The conductors 17 and 17 are the supply conductors connecting with any suitable power or other circuit, and the conductors 24, 24 are the consumption circuit conductors.

In the particular example illustrated both breakers are supplied with tripping coils 21, 21". This is a so-called double arm arrangement whereby when there is an overload on either side of the circuit the breaker in that side of the circuit will be tripped. In establishing connection between the supply and consumption circuits with both breakers open, one of them is first closed and then the other is closed; but should there be an overload condition upon attempted closure of the second arm or breaker the other breaker of the pair is tripped by its tripping coil and so prevents closure of the circuit until the overload or other condition is removed.

To afford this alternate resetting or closure of the breakers the aforesaid resetting structure comprising the member 72 is provided.

Assuming both breakers open, the handle 57 is rotated first, for example, in a counterclockwise direction as viewed in Fig. 2,bringing the left hand edge 73 of member 72 into engagement with the arcuate engaging surface 35 of the toggle lever 34 of the breaker A, continued counterclockwise movement causing the edge 73 to depress the arm 34, causing it to rotate in clockwise direction about its pivot 33 and so extend the toggle and bring the bridging member 25 into engagement with the main terminals 13 and 14, so completing the circuit, the toggle 30, 32 slightly overtraveling as the lower side of the toggle arm 34 engages the abutment 34 The operator then rotates the handle 57 in clockwise direction and by similar. operation closes the breaker B. \Vhen he removes his hand from the handle 57 the spring brings the resetting structure back to normal position indicated.

The lugs upon the inner side of the front .wall of the box 4 prevent excessive oscillatory or rotative movement of the member 72, because disposed in the paths of the lugs 74, 74 upon the bracket member 62.

If an overload should occur the armature 43 of one or the other or of both of the electro-magnets 21, 21 will be attracted upwardly, striking the lower end of the pin 47, causing it to move upwardly and rotate the toggle arm 34 in counterclockwise direction about its pivot 33 sufficiently to underset the toggle, whereupon it will collapse, under the resiliency of the bridge 25, or of additional spring structure if supplied, the arm 26 rotating in a clockwise direction about its pivot 28 and carrying the bridging contact 25 away from the main terminals 13 and 14, the movable shunt carbon 39 finally separating from stationary shunt carbon 38, where the final arc occurs.

In such opening movement the arm 26 first engages the inwardly bent tongue 78 on the housing bracket 27, this action braking the movement of the arm 26 and contact 25 and bringing them slowly to rest with the arm 26 resting upon the stop 79 upon the aforesaid bracket 27.

If it is desired to trip the breakers or either of them at will, as before overload or other abnormal electrical condition obtains,

the operator simply presses inwardly upon the button 55, thereby causing the shaft structure 52 and the member 72 carried thereby to partake of rectilinear movement inwardly in opposition to spring 59, the squared portion 53 of the shaft structure sliding through the hole 58 of the handle 57 which remains in its normal position. Finally the inner face of the member 62 will engage either or both of the tripping arms or lugs 37, causing counterclockwise rotation, as viewed in Fig. 1, of the toggle arm 34,

undersetting the toggle, which then collapses with resultant circuit rupture as above described. Upon release of pressure upon the button 55 the spring 59 will restore the parts to the normal position indicated.

In this inward rectilinear movement of the shaft 52 and member 72 carried thereby, the lugs 74 upon bracket 62 still to some extent longitudinallyoverlap the stationary lugs 75, whereby when the member 72 is pushed inwardly as described, if rotation should be imparted :to the handle 57 the member 72 will nevertheless be again limited in its rotative or oscillatory movement.

fVVhen a switch or circuit breaker opens, the indicator disk 36 rotates in a counterclockwise direction about the pivot 33, as viewed in Fig. 1, to position where the disk 'is no longer visible through the coiipe-rating aperture 76 in the front wall of the box 4. However, when the breaker is returned to closed position it is again visible and indicates that the breaker is in closed position.

While the disk 36 may be of material other than insulating material, it is )referably of the latter to prevent any con ucting object thrust through the aperture 76, rupturing glass 77, to form a conducting path between the metal box 4 and the toggle arm 34 or any other part of the circuit breaker structure which may be electrically alive.

VV-hat I claim is:

1. The combination with the movable contact member of a switch, of overtraveling toggle structure for moving the same to normal position and for locking the same therein, and a member partaking of rotative and rectilinear movements for respectively actuating and tripping said toggle structure.

2. The combination with the movable contact member of a switch, of overtraveling toggle structure for moving the same to normal position and for locking the same therein, means partaking of rotative and rectilinear movements for respectively actuating and tripping said toggle structure, an inclosing housing having a wall on which said means are carried in detached relation to said toggle structure, and means external to said housing for imparting said rotative and rectilinear movements.

3. The combination with the movable contact member of a switch, of means for restraining the same in normal position,'and means for actuating and tripping said contact member comprising a shaft capable of rotative and longitudinal movements, and a member carried by said shaft. and rotatable thereby for moving said contact member to normal position and for actuating said restraining means for tripping said contact member when said shaft partakes of longitudinal movement.

4. 'The'combination with the movable contact member of a switch, of means for restraining the same in normal osition, and means for actuating and tripping said contact member comprising a shaft capable of rotative and longitudinal movements,a member carried by said shaft and rotatable thereby for moving said contact member to normal position and for actuating said restraining means for tripping said contact member when said shaft partakes of longitudinal movement, a housing, said shaft extending to the exterior of said housing, and a member on said shaft exterior to said housing for rotating the same. a I

5. The combination with the movable contact member of a switch, of means for restraining the same in normal position, and means for actuating and tripping said contact member comprising a shaft capable of rotative and longitudinal movements, a member carried by said shaft and rotatable thereby for moving said contact member to normal position and for actuating said restraining means for tripping said contact member when said shaft partakes of longi tudinal movement, a housing, said shaft extending to the exterior of said housing, and a member on said shaft exterior to said housing for rotating the same, said shaft sliding through said member.

6. The combination with the movable contact member of a switch, of means for restraining the same in normal osition, and means for actuating and tripping said contact member comprisin a shaft capable of rotative and longitudinflmovements, a member carried by said shaft and rotatable there by for moving said contact member to normal position and for actuating said tripping means for tripping said contact member when said shaft pa-rtakes of longitudinal movement, a housing, said shaft extending to the exterior of said housing, a member on said shaft exterior to said housing for rotating the same, said shaft sliding through said member, and a. spring for restoring said shaft to normal position.

7. The combination with the movable contact member of a switch, of overtraveling toggle structure for moving the same to normal position and for locking the same therein, and means for actuating and tripping said toggle mechanism comprising a shaft partaking of rotary and longitudinal movements, and a member movable with said shaft for actuating said toggle structure by rotative movement and for tripping the same by longitudinal movement.

8. The combination with the movable contact member of a switch. of overtraveling toggle structure for moving the same to normal position and for locking the same therein, and means for actuating and tripping said toggle mechanism comprising a shaft partaking of rotary. and longitudinal movements, a member movable with said shaft for actuating said toggle structure by retative movement and for tripping the same by longitudinal movement, a housing on which said last named member is carried in detached relation to said toggle structure, said shaft extending to the exterior of said housing, and a member on said shaft exterio'r to said housing for imparting rotative movement thereto.

9. The combination with the movable contact member of an electric switch. of overtraveling toggle structure for actuating and locking the same, a tripping member secured to one of the members of the toggle structure, and a member partaking of rotative and rectilinear movements for actuating said toggle structure and engaging said tripping member.

10. The combination with the movable contact member of an electric switch, of overtraveling toggle structure for actuating and locking the same, a tripping member secured to one of the members of said toggle structure adjacent the pivot thereof, and a member partaking of rotative and rectilinear movements for actuating said toggle structure and engaging said tripping member.

11. The combination with a base. of a movable contactmember of a switch pivoted therein and movable in a plane normal to the planeof said base, toggle mechanism comprising overtraveling toggle links for actuating and locking said contact member,

. means external. to said housing for a tripping member secured to one of the toggle links, and a member rotatable about an axis normal to the plane of said. base for actuating said toggle mechanism and movable in a rectilinear path parallel to the plane of movement of said contact member for engaging said tripping member.

12. The combination with a base, of a movable contact member of a switch pivoted thereon. and movable in a plane normal to the plane of said base, toggle mechanism comprising overtraveling toggle links for actuating and locking said contact member, a tripping member secured to one of the toggle links adjacent its pivot, and a member rotatable about an axis normal to the plane of said base for actuating said toggle mech anism and movable in a rectilinear path parallel to the plane of movement of said contact member for engaging said tripping member. 1

13. The combination with aplurality of electric switches each comprising a movable contact member, a member for operating the same, means for locking the same in normal position, and a member partaking of oscillatory movement for actuating said operating members alternately by movements in opposite directions and partaking of rectilinear movement to trip said locking means,

14. The combination with a plurality of electric switches each comprising a movablecontact member, a member for operating the same, means for locking the same in normal position, a member partaking of oscillatory movement in opposite directions for actuating said operating members in sequence and partaking of rectilinear movement for tripping said locking means, a. housing on which said last named member is carried in detached relation to said operating members and locking means, and actuating said last named member.

15. The combination with a plurality of electric switches each comprising a movable contact member, a member for operating the same, means for locking the same in normal position, and a member partaking of oscillatory movement in opposite directions for actuating said operating members in sequence and, partaking of rectilinear -movement for substantially simultaneously actuating said tripping means of said switches.

16. The combination with a plurality of electric switches each com arising a movable contact member, overtrave ing toggle mechanism for operating and locking the same, and a member oscillatory in opposite directions for operating said toggle mechanisms in sequence and partaking of rectilinear movement for tripping them.

17. The combination with a plurality of electric switches each com rising a movable contact member, overtraveing toggle mechmagnetic tripping anism for operating and locking the same, and a member oscillatory in opposite directions for operating said toggle mechanisms in sequence and partaking of rectilinear movement tripping said toggle mechanisms.

18. The combination with supply and consumption circuit conductors, of an electric switch interposed between. eat: '1 supply conductor and the co-acting consumption circuit conductor, means for moving each of said switches to normal position independently of the other, means for locking each of said switches in normal position, and a member partaking of oscillatory movement for actuating said switches and partaking of longitudinal movement for actuating said locking means for tripping said switches.

' 19. Th combination with. supply and consumption 'circuit conductors, of an electric switch interposed between each supply conductor and the co-acting consumption cir cuit conductor, means r'or moving each of said switches to normal position independently of the other, means for locking each of said switches in normal position, a member partaking of oscillatory movement in opposite directions for actuating said switches and partaking of longitudinal movement for tripping them, a housing inclosing said switches and said member, and means external to said housing for imparting to said member'both oscillatory and longitudinal movements.

20. The combination with supply and consumption circuit conductors, of an. electric switch interposed between each supply conductor and the co-acting consumption circuit conductor, means formoving each of said switches to normal position independently of the other, means for locking each of said switches in normal position, electromeans for each of said switches, and a member partaking of oscillatory movement for actuating said switches and partaking of longitudinal movement for tripping them.

21. The combination with supply and com sumption circuit conductors, of an electric switch, interposed between each supply conductor and the coacting consumption. cir-v cuit conductor, means for moving each of said switches to normal position independently of the other, means for locking each of said switches in normal position, electromagnetic tripping means for each of said switches, a member partaking of oscillatory movement for actuating said switches and partaking of longitudinal movement for tripping said switches, a housing inclosing said switches and carrying said last named member in detached relation to said locking means and said switches, said electromagnetic tripping means and said member, an means external to said housing for impart for substantially simultaneously ing to said member said oscillatory and longitudinal movements.

22. The combination with the movable contact member of an electric switch, of means for restraining the same in normal position, and a member detached from and movable independently of said contact member partaking of different movements for respectively actuating said contact member and for actuating said restraining means for tripping said contact member.

23. The combination with the movable contact member of an electric switch, of means for restraining the same in normal position, and means detached from said contactmember capable of a rotative and a different movement "for respectively actuating said contact member and for actuating said restraining means for tripping said contact member.

24. The combination with the movable contact member of an electric switch, of means for restraining the same in normal position, and means detached from said con tact member partaking of rectilinear movement and of a different movement for respectively actuating said restraining means and actuating said contact member.

25. The combination with circuit breaker mechanism comprising independently operable switch arms, means for restraining at least one of them in normal position, and automatic tripping mechanism therefor, of a housing inclosing said circuit breaker mechanism, and means in detached relation to said switch arms carried by and operable from the exterior of said housing partaking of dilterent movements at right angles to the planes of movement of said switch arms for actuating said switch arms one at a time. I

26. The combination with automatic circuit breaker mechanism comprising independently operable switch arms, means for restraining them in normal position, and automatic tripping mechanism, of a housing inclosing said circuit breaker mechanism, means operable from the exterior of said housing partaking of different movements for actuating said switch arms one at a time and partaking of movement in a different direction for actuating said restraining means. I

27. The combination with the movable contact member of an electric switch, of means for restraining the same in normal position, a member for actuating said con tact member by movement in one direction, a handle for operating said actuating member, and means "for locking said handle against movement, said actuating member movable in a different direction independently of said handle while locked for actuating said restraining means.

28. The combination with independently operable switcharms, of means for restraining them in normal position, a member movable in opposite directions for actuating said switch arms, a handle for operating said actuating member, and means for locking said handle against movement, said actuating member movable in a different direction independently of said handle while locked for actfuating said restraining means.

29. The combination with a plurality of pivoted independently operable switch arms movable in parallel planes about a common axis, of a housing inclosing the same, and actuating means carried by said housing in detached relation to said switch arms and operable from the exterior of said housing movable about an axis parallel to the planes of movement of said switch arms for actuating said switch arms one at a time.

30. The combination with automatic circuit breaker mechanism comprising pivoted independently operable switch arms movable in parallel planes about a common axis, of means for restraining them in normal position, and automatic tripping mechanism, of a housing inclosing said circuit breaker mechanism, and means carried by said housing in detached relation to said switch arms and operable from the exterior of said housing movable about a pivotal axis parallel to and between the planes of movement of said switch arms for re-setting them one at a time.

31. In combination, a base, independently operable pivoted contact members movable in parallel planes normal to said base, means for restraining said contact members in circuit closing position, automatic tripping mechanism, .a'housing, a member detached from said contact members and operable from the exterior of said hous ing about a pivot parallel to said planes for actuating said contact members to circuit closing position one at a time, said member movable longitudinally of said pivot for actuating said restraining means.

32. The combination with the movable member of a switch, of means for restraining the same in normal position, a tripping magnet, an armature therefor, and a member disposed in the path ot'said armature movable along and guided by a pole of said magnet for actuating said restraining means to free said movable switch member.

33. The combination with the movable member of a switch, of means for restraining the same in. normal position, a tripping magnet, an armature therefor, and a member disposed in the path of said armature movable along and guided by a pole of said magnet for actuating said restraining means to free said movable switchmember, said mema plurality of ber having projections co-acting with said switch member, means for restraining it in 34. The combination with the movable member of a switch, of means for restraining the same'in normal position, a tripping magnet, an armature therefor, a guide'member spaced from the pole of said magnet, and a secondmember slidablebetween said pole and said guide member and actuated by said armature to actuate said restraining means to free said movable switch member.

35. The combination with the movable member of a switch, of means for restraining the same in normal position, a tripping magnet, an armature therefor, a guide member spaced from the pole of said magnet, a second member slidable between said pole and said guide member and actuated by said armature to actuate said restraining -means to free saldmovable switch member,

and projections on said second member on opposite sides of said pole limiting the travel of said second member in both directions. Y

36. The combination with automatic circuit breaker mechanism comprising independently movable switch members and a tomatic tripping mechanism therefor, oi. movable housing structure, and resetting mechanism detached from said switch members for resetting them successively carried by said housing structure and movable therewith to and away from operative relation with respect to said switch members. i

37. The combination with automatic circuit breaker mechanism comprising independently movable switch members and automatic tripping mechanism therefor, of

movable housing structure, and resetting mechanism detached from said switch members for resetting them successively by movements in different directions carried by said housing structure and movable therewith to and away from operative relation with respect to said switch members.

38. The combination with automatic circuit breaker mechanism comprising independently movable switch members and automatic tripping mechanism therefor, of ahousing inclosing said circuit breaker mechanism, and tripping mechanism and mechanism for resetting said switch members successively detached from said circuit breaker mechanism and carried by a wall of said housing to and away from operative relation with said circuit breaker mechanism.

39. The combination with a movable normal position, and automatic tripping means therefor, of a second switch member,

an inclosing housing, and means operable from the exterior of and carried by said housing in detached relation to said switch members for actuating them successively to their normal positions.

40. The combinatlon with a movable normal position, and automatic tripping means therefor, of a second switch member,

a movable support, and a member operable by distinct movements carried by said movable support in detached relation to said switch members for moving them successively to their normal positions.

41. The combination with a movable switch member, means for restraining it in normal position, and automatic tripping means therefor, of a second switch member, an inclosing housing, and a member rotatable in opposite directions from the exterior of and carried by said housing in detached relation to said switch members for actuating them successively to the normal positions.

42; The combination with a movable switch member, means for restraining it in normal position, and automatic tripping means therefor, of a second switch member, a member operable by distinct movements for actuating said switch members in sue-- cession to their normal positions and movable in a different direction for actuating said restraining means, an inclosing housing for said switch members carrying said last closing position, automatic tripping mechani'sm therefor, a movable support, and resetting mechanism comprising a member carried by said movable support in detached relation to said operating levers and adapted to engage them by oscillatory movements in opposite directions about a pivotal. axis disposed between said operating levers and normal to said base.

44. The combination with a base, of a plurality of, switch arms movable in parallel planes normal to said base, operating levers therefor movable about a common axis in parallel planes normal to said base, means.

for restraining said switch arms in circuit closing position, automatic tripping mechanism therefor, and resetting mechanism comprising a member detached from said operating levers and adapted to engage them by oscillatory movements in opposite directions about a pivotal afxis disposed between said operating levers and normal to said base, said last named member partaking of movement in a direction toward and normal to said base -for tripping said switch arms.

45; The combination with a base, of automatic circuit breaker mechanism secured 8 1,eee,eee

thereon comprising indepencienfly movable said supperi and movable therewith to and switch members and auteniatic tripping away from operative relation with respect mechanism therefor, 21 support remcvable to said switch members. v 10 from said base independently of said circuit In testimony whereof I have hereunto 5 breaker mechanism, and resetting mechaaffixed my signature this 22d day of Denism detached frem said switch members eember1,1919 for resetting them successively carried by WILLIAM M, SCOTT, 

